You want to use the address of the picture. You are real close. If your using Internet Exlporer right click on the image then view the properties,, copy the image address (URL). If your using Chrome right click on the image then select the copy image URL option. For Mozilla Firefox right click on the image then select copy image location. Photobucket is tagging on a little junk at the end of the address that you will need to delete, everything after .jpg
Joe........